Don't be caught out by the new Royal Mail small parcel measurements - Royal Mail Small Parcel Cardboard Boxes 6" Cube £24.99 for 100 delivered on eBay (phoenixsuppliesonline)
Ok so the whole new Royal Mail small / medium parcel thing is a JOKE. A parcel that cost £2.20 to send 2nd Class last Monday might very well now cost you £5.20 for 2nd Class if it is too big (£5.20 being the CHEAPEST price for a medium parcel, even if it weighs only 100g).
Try to buy some from Royal Mail on their website and they will charge you £11.48 for TEN boxes! This is £24.99 for ONE HUNDRED boxes! Works out at 25p a box and if you buy more they go down in price. 200 boxes works out at 20p each etc. These seem to be the best buy around.
Remember, if you choose to use a box any bigger than this then postage will cost you at least £3 more!! Scandalous.
Hope this saves someone some cash :)
P.S I might as well say here that the best way to beat these crazy prices if you have slightly bigger items is to send them via Collect+ - up to 2KG is £3.99 and up to 10KG is £4.99 and most items are delivered the next working day via courier. They make Royal Mail's prices look like daylight robbery tbh.
****To be clear, a small parcel is:
Length 45cm Width 35cm Depth 8cm
Length: 16cm and Width: 16cm and Depth: 16cm with max weight of 2KG.***
Search Ebay,there are cheaper prices out there,for example these are 15.75 for a hundred 170371084586
MyHermes are cheaper than Collect+ for a lot of parcels and (in my experience) just as reliable, worth comparing first.
For those interested as to the reasons why the prices have increased, please refer to the EU's Postal Service Directives (http://ec.europa.eu/internal_market/post/legislation/index_en.htm) They are the reason for the price hikes, the changes in the way post is handled and why post is now heavily categorised. Boycotting the Royal Mail will not make the slightest bit of difference, as regulation is no longer the remit of either Royal Mail or our Westminster Administration.
£26.99 on Amazon - £2 more!? http://www.amazon.co.uk/gp/product/B00CBCFLGI