I don't have a subscription so I've only looked at the Grey Sheet my dealer has on hand. So I'm not 100% on the answers, so these are my best guess.
1.) Are the prices for coins only for graded coins or are there separate prices for TPG
and raw, or are they all the same?
Prices are for Grade, year, mint mark. There is no difference in pricing for slabbed or not slabbed. Although with slabs it becomes more its AU 50 because that's what a slab says. With raw, its this is AU 50, me as a seller I say its AU58, you meet in the middle at AU53. Since dealers know this, they (probably) say its XF 45 and you say AU55, so you both settle at AU 50. Although I have seen CAC sticker column (so CAC adds to the price)
2.) Since they are "official wholesale greysheet" prices, are they cast in stone, prices that dealers must pay one another or are they no different than retail price guides i.e., PCGS
, CPG etc. that are only general guides with prices actually paid sometimes 25% below listed prices?
NOTHING IS SET IN STONE. You buy at what you feel is a good price. For example a 1922 Peace dollar
in MS63 I think has a greysheet of $27. If you have 15 MS 63 Peace dollars
you may offer $22, or if you have none and there is some one looking for one, you may offer $30.
Grey sheet is a starting point and for many deals its a fair price.
3.) Is it possible as a collector to buy at or near greysheet wholesale prices anywhere or are those prices all closely held and guarded by dealers and coin shops keeping the public always negotiating somewhere around retail?
I've purchased below, above and at Greysheet. Greysheet is a point in time, if you purchased that coins 5 years ago and had no bites and I come in and am interested, we might be able to negotiate below greysheet. Remember that MS63 Peace, a few years ago it was probably at $20, so selling it at $27 you might not lose anything..
Again take the above as mostly my opinion based on the 2 local dealers I generally buy from. Usually on eBay they price using the NGC/PCGS price guide which is higher than retail.