I have tried on one piece swimsuits at the thrift shop and most are too short in the torso for me. Lands End carries long torso suits, but I hesitate to spend that kind of money for something I would hardly be able to wear.
Last year I ran across a brand new bottom at Goodwill in black. High waisted with a bit of a scrunch Then just the other day while looking at GW for a sports bra, I spotted a blue tankini top made by Island Waves. It looked large enough to fit me, but the size tag had been cut out. Sure enough it fit and at $5, it was mine. So I now have a swimsuit that cost me $10 and I am contemplating just where I might get a chance to wear it out of the house. I love to slip it on and relish the possibilities.