Buy/Sell/Trade Forum

The 2014 Topps WWE Road to Wreslemania #57 is currently selling for $1 on ebay.  https://www.ebay.com/itm/2014-Topps-WWE-Road-to-Wrestlemania-30-Years-57-Triple-H-Brock-Lesnar/371232047535?epid=1031405014&hash=item566f2781af:g:0vwAAOSw1ZBUruAP

Assuming that is the right card, then if I were to take a guess at the value of a printing plate for a $1 card, I'd say about $20 to #25, since it is wrestling and two popular names.  If you have two printing plate collectors bidding on it at the same time, then maybe double that.  If both of them are hard core Brock Lesnar or Triple H collectors on top of being printing plate collectors, then a bidding war might reach to over a hundred.  It really is hard to say, since timing is a very important and fickle thing.  

I'm not a printing plate guy myself, so I have difficulty in trying to get a feel for how much I'd pay for a printing plate for a $1 card that I really wanted for my personal collection.  I have to agree with the others above that an "artifically" rare SN1/1 card does not necessarily equate to big money.  Also, deep down, I always feel that a printing plate is actually more a 1/4 regardless of the SN1/1, since it takes four different color plates to complete the "set" for that card.  

In the Leaf Pop Century sets, a printing plate almost goes for the same price as the card itself if it is a not so famous celebrity.  If the celebrity is very famous and in demand, then a plate may go for double or triple the money of the base card.  Again, timing is important, because without the right buyers engaged in a bidding war for the same item, the outcome may be disappointing.

I am no expert on card values, but just giving you my thoughts, and what I've seen sold on Ebay.  You may want to do a little homework yourself, and just watch printing plate auctions for a number of different sports or nonsport plates, and develop a feel for what your plate may be worth.