Just looked at 990 PRO PCIe 4.0 NVMe M.2 SSD and they are just £202 to me! But that is getting silly for my needs.
Samsung 990 Pro's are currently top of the tree in performance, from Samsung for internal NVMe based drives. So you can expect they will be pricey.
However I think its still possible to get pretty good price / performance bang-for-buck deal with these things.
Ebuyer still have them for £130 in the 2 TB size (which is actually cheaper than the same drive they are selling in the 1 TB size)
Samsung also offer a 5-year warranty on their T9 portable drives and 3 years on the others in their portable SSD range. I think most of their internal 990 back to 960 Pro range of internal drives are also 5-years (admittedly with a TBW limit also).