You have a LOT of money tied up in these Lincoln proofs!
I think the $200 price you're quoting is for coins graded by PCGS as PR70DCAM that were bid to high levels. A quick look at ebay's completed listings doesn't show more (sometimes much less) than $80 for an NGC PR69 ULTRA CAMEO.
The coins you submit for grading will not all come back as 70s so you'll likely be taking a loss on many of the coins that grade 69 regardless of the TPG used.
ANACS may give you a price break as vermontensium noted but my guess is you'll be lucky to sell an ANACS PF70DCAM for much over $100 so I'm not sure that's a good option.
If I was dead set on submitting for TPG, I would use either PCGS or NGC due to their reputation being excellent. Then I would sort the coins and submit only those that looked "perfect" under 5X magnification. Lastly I would say a prayer that I wouldn't lose money on the deal because by the time you factor in fees, insurance, shipping, etc. it's likely to cost $30 per coin that won't be recouped on the ones that come back 69s.
Good Luck!
ANA #R3154474




















