Whilst trying to find the best price for a weird fish macaroni top, I stumbled upon Marshall Leisure, worth a browse for their models and descriptions alone.
They've got a good range of Weird Fish clothing at up to 49% off. Sizes are limited on some of the best bargains, but it looks like the cheapest place for this brand.
Postage is a rather hefty -up to £5.95 depending on weight unless you spend £70 in which case it's free, but even if your only buying 1 item the total cost should be cheaper than buying on fleabay.
A couple of examples are in the next post