These Forever stamps are good "forever" no matter how much first class postage goes up.
https://www.ebay.com/itm/203452546831?_trkparms=aid%3D1110006%26algo%3DHOMESPLICE.SIM%26ao%3D1%26asc%3D20200818143132%26meid%3D40d9beaa5fcd40e4914c386cdceb7147%26pid%3D101198%26rk%3D2%26rkt%3D12%26sd%3D363413107446%26itm%3D203452546831%26pmt%3D1%26noa%3D0%26pg%3D2047675%26algv%3DSimplAMLCvipPairwiseWebWithBBEV2bDemotion&_trksid=p2047675.c101198.m1985&amdata=cksum%3A20345254683140d9beaa5fcd40e4914c386cdceb7147%7Cenc%3AAQAFAAACAEf3d63mBRbS3OxRa7k31Ma6shj4YcSI%252BnW9AcLYMozZXcGcHZ%252FGVy3x9udorqVWWmiW6mETUnZZ3qhGpGcK8OAk6kLM6h02%252B1nembWiJBFvL8VnxSU9zR4WSoYKdV%252B835cWnbHXE%252FYTfbvU3SNcf%252BBwDCuBZ3PEaSMDG4zZHHaV6xGYRn0ia7pkbHNxUlXvXspgx5fXcdM4OKaKBpI8HJ%252BEROi2Q2Mar4XmI2qUYKRj6Fr5oqQL%252FQl%252F8RDSmtPhsqj8Vg%252FbsCtsDYcixyQLYl4E8KPKD0cWyihZ796rFfjCWdZjzXHyylLL6cS1y8fQg%252FhYC8KUZhc12AGUMNnVOsvigfmRE%252FPugIBMrFMuI%252FdvqHydHOaap4Mlonr07LJ17PbifmXzyNI5htJ46e0w9papXy5RO02aV5eWREXYozwLLRhrdNrR6WO3NEP8zK9rM8h11WXxmcswVoli42tQ5rk68LDIVNsVgFHvI5B%252BdXFh8o57VYFsbzJpT2ssHqvwXiYCdYDrjj38LvVrufJJzAh9ho4ni15TfitMMPqexmmjV7ocdKJ22ctrpaEOsBkPruXMiP10kpecwQdnpavFCDV12nFhQKM8W0PFbCrw8Z3udQNOncOdjv3jaMA%252FWIo0wUou2AtrTjt%252Bn4B2TwZeBae9H%252FT0w754T6AZimAYJCmi%7Campid%3APL_CLK%7Cclp%3A2047675
