Ye but add the postage and vat it kills the build.
I went woth 2040 pack from ratrig as they have v groove and 2 grooves each side as well as top all v groove. You dont say what your using it for but I done a ton of searching and its super expensive here in UK, China sellers are expensive too. Ratrig was best deal by far but only 2020 and 2040. I am thinking get some 4040 for strengh but when you see the vat and post cost more then the parts its a put off. There not even iseful with 1 slot and no grooves and some are real skinny on the profile, the ones a lil expensiver be thicker.
Simon on ebay has t slot at the cheapest prices by far and free delivery, he at 33 for 3x 1m lenghs and he cuts for free. I used him a bunch but I needed v slot.

Anyway
Simon on ebay or ratrig portugal are the cheapest by far.

Take care. I spent months searching. Trust me on this aha.