I started collecting records from thrifts, flea markets, and garage sales in the early 90's and from then til now I've definetly seen less and less good vinyl available. Those big boxes of goodies has turned into a few goodies here and ther. Plus you need to be very persistent to find good stuff.
Since I was finding less recods around I happened to get into this videogame collecting thing about a year and a half ago. The records were'nt around, but the retro gaming stuff was.
But, just in the past year since I've been thrifting the workers get to know a regular and they know what you're after. I just saw a 2600 with power supply paddle and joysticks going for $35, when just a few months earlier I got one from the same place and in better condition for $10.
If I do find a cool cartridge it will be like $5.99 for somthing common.
They are jacking up the prices on anything videogame related now.