Photo paper and frames at Costco
I've been quite happy with Costco's Kirtland photo paper package that I bought in size 8.5 x 11 inches (150 sheets for $18.79). Several others on this forum have also said the same.
If you are a member and go onto Costco.com, they also sell other paper sizes there, including 13x19 (50 sheets for $45), 11x14 (not listed right now but I bought a package two weeks ago 50 sheets for $27), 5x7 (100 sheets for $15), and 4x6 (300 sheets for $15)
Epson paper is available in one size:
Epson Photo Paper Letter, White, 60lb, 89-Bright, 100ct EPS S041271 $27
They also have frames 8x10 and 11x14 -- either all black or brown wood (real?). The larger size costs $20 for two and have mats for ~ 8x10 prints.