Just to add to my comments above perhaps Pinarello is not the brand to buy at all. When you look at this video just released it shows the Pinarello Dogma frame compared to a Chinarello frame and in many areas the Chinarello actually scores higher for safety and remember the Chinarello is a low quality rip off that likely hasn't gone through a proper certification process. Yes the Chinarello is a worse frame but I can't help feel both frames are poor quality based on this carbon fibre engineer's findings. They just seem like low quality Chinese carbon fibre frames. Contrast that to Giant who are a huge player in CF frame production with very high engineering standards, high weight limits and long warranties. I'm just trying to help people make an informed choice and not being ripped off but admittedly I'm very biased in favour of Giant as it's the brand seen by the industry as having the highest standards of manufacture considering their prices, I don't actually have a Giant bike myself I might add. https://www.youtube.com/watch?v=cZnPY0hMs_8&t=0s
Why would you pay soo much for such a dated frame using a manufacturing technique of bonding aluminium and carbon fibre together which is prone to problems.The only positive here seems to be the brand name and brand heritage although the brand is US owned nowadays. A couple years ago I was translating Chinese forum postings out of interest because I'm interested in the cycle industry to see what they were saying and one of the comments was they couldn't believe how much the Italians were charging for their Chinese frame and forks, absolute amazement but they were pleased as it was ripping off the Japanese who buy a lot of Italian brand bikes it seems who they don't appear to like, this was actually related to the fuji-ta factory and the Bianchi brand which they manufactured but the comment basically stated the Italians charge far more than anyone else for their chinese manufactured frames and forks and they were surprised they could get away with such pricing. Carbotec branded frames are very low price in comparison to Pinarello. This is not a classic Italian manufactured steel frameset with Columbus tubing. If you are buying a frameset manufactured in the far east why not get a bang up to date model using the best manufacturing techniques not bonding aluminium and carbon fibre together which is not something done in the wider industry for frames, in fact the most dangerous forks which have been the cause of a huge number of recalls has been where carbon fibre blades have been bonded to an aluminium steerer and the bonding has failed causing many riders extreme injuries or even death. The safety rating of full carbon fibre forks is actually better. You only have a short warranty on Pinarello products too. I'll admit I don't really do brands especially where the brand isn't the manufacturer, I look to what you are getting for the money and for me this is not an appealing product for the reasons given. Even if you like Pinarello as a brand this is not the Pinarello product to buy. I've heard it stated that buying an Italian bike is about emotion rather than reason and this seems a product based on that thinking. I totally accept that it's relatively cheap price to get the right brand on a genuine frameset though I just don't think the product itself is that good and would be vastly inferior to something like a Giant frameset especially with regards safety.
I suppose it’s analogous to asking why anyone would pay an extra £500 on a new car to have metallic paint, or £800 to have larger alloys.
I've been keeping an eye on the hot deals for bikes and cycling stuff on this site for years via search alerts. My number 1 observation is that any fatuous deal, no matter how silly it is, will still get a ton of heat for as long as it involves one of the shiny top brands - be it Pinarello, Trek, Colnago etc. Nevermind no one actually pulls the trigger on it - there'll still be a crowd in the comment section drooling over the deal and pumping up its rating. This deal is likely the epitome of this trend - a very esoteric and niche frame, which no one is actually going to buy, yet 600+ heat rating and a holy war in the comments section. I just wish my fellow cycling enthusiasts would get real one day...
What does genuine Pinarello mean, their carbon fibre frames are made by carbotec of Taiwan and probably the forks and stays are for this frameset. I don't know where the aluminium frame is made (maybe carbotec) but that probably isn't made by Pinarello either. They seem to buy in bare frames and forks and paint them themselves same as Orbea of Spain. The frame and forks are still made in Taiwan or mainland China. There has been quite a lot of innovation and improvement in carbon fibre frames and forks so if this is an old frame and old CF forks it may not be that amazing. Unless you know the real manufacturer of the product how can you assess the quality accurately. Also the frame is 6061-T6 which is nothing amazing, Giant do aluminium frames with more advanced 6011 aluminium and you won't have any bonding issues of joining carbon fibre to aluminium either. I seem to remember Pinarello have a very short warranty too like 2 years on their frames. Seems like a product for brand snobs only. Planet X use one of the very high quality CF factories in China for some or one of their frames, bang up to date frame from one of the best factories. Sadly I don't now which model frame it is but it will likely be a far superior frameset to this Pinarello even if it hasn't got a italian brand on it and of course will be fully carbon fibre with no bonding issues of joining aluminium to carbon fibre. The manufacturer may be dengfu. You may be able to match the frame from the dengfu site to the same on the Planet X site. It's a better frameset than many top brands use on their high end models, Trek and Canyon use Quest Composites which are definitely inferior to Dengfu. Admittedly I don't really know much about Carbotec quality. Most of the US and European brands claim the Taiwanese and Chinese factories they use are the best but when you see engineers analyse frames results can be very different. Worth checking out Hambini and Luescher Technik on youtube to get some idea of frame quality, it's quite revealing how appalling the manufacturing quality of some cf frames are even bikes that hit 5 figures at retail. https://www.cens.com/cens/html/en/supplier/supplier_home_20402.html