Glasses hard to say...the old days of 10 and 20 dollar cargo pants and 10 dollar button downs for apparel was pretty good...I'd say it'd be something small glasses related like Ruby lenses for Gascan S or half price MP lenses
Wow, that's a tough one, although lately the Vault store by me has some slim pickings. I once found my Splice, Ducati Valve and Plate in one trip a long time ago. I remember getting jeans for $25 too. Maybe the time I found Blue Iridium lenses for a pair of OO Square I needed lenses for, I had looking off and on for about 3 years until I found them at the Vault in Las Vegas.