Will set collectors dry up the supply?

I have kept my eye on the T210 series 6 cards for a while now. I am just now at the point where I can hold on to and collect them again. I have three cards and a postcard of the Winchester team. The Winchester team is going to be my focus as I am from there. I have noticed times when ungraded lower conditions cards went for roughly 60 dollars each. Then up to two years ago lesser condition cards were going for up to 200 dollars each. Now it seems that many cards have leveled out at around 100.00 a piece. I just won a T210 Atwell SGC 30 for 102.00 on ebay. I also bought a raw low condition Van Landingham Shelbyville for 60.00 in the bin from Joesvintage on ebay. I consider that a steal because it is my opinion that Van Landingham Shelbyville is a tough card in the set but then most T210 6 cards are tough to find. The problem I have seen is that when T210 6 cards do come up for sale a lot of times they are in huge collections that are way out of my budget. But the market has went up and down on these in the last few years.

Tony