Need Help About The 2009 Quarter Set

I do not know what kind of price you are looking at on a set of PR70 PCGS coins but you can still purchase the sets directly from the US Mint. The clad version is $14.95 and the 90% silver version is $29.95. I guarantee you will have a hard time finding any difference between a graded PR70 and the coins still in a proof set and I am sure the proof set will cost considerably less. Now I am not telling what to collect, only you can decide that, but I wish to inform you of what may be a more cost-effective option that would leave you more money to spend on other coins

As for the State/Territory quarter series in general, the silver versions have tended to hold their value a bit better than the clad because of the silver content and lower overall mintages. Prices for graded 2009s have not stabilized yet since they are still readily available so you may buy now only to find out six months from now they are worth less than what you paid. You may also find that they have gone up in value. Pricing on high grade modern coins tends to be quite volatile and sometimes it is difficult to justify paying multiple times the cost of a PR69 in order to get a PR70 when the actual differences are incredibly minute.

Thanks everyone for all the great information, I really do appreciate it. I had made the offer of $245.00 for the 6 coin set and the seller was willing to accept very quickly but I told him that I would like to think about it and I would get back with him. And after reading these replies I am glad I didn't go through with it.
Thanks again everyone. You saved me some bucks.