What's with the impossibility in finding replacement cushions?

Hello DIYourselfers,
so when the cushions for your backyard furniture wear out and the frame is still in stellar condition what's a gal to do? I visited my local upholstery and a seamstress, googled the heck out of " finding replacements " without success. I priced new foam and material...terribly cost prohibitive to say the least. Anyone come up with an answer to this dilemma? Thanks and cheers to all! Muriel
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