i would like to know a free website where i can find what my baseball cards are worth?

I am looking for any ideas on what brand of glove would be the best suited for a minor leauge baseball player. He is a closing pitcher. I have been seeing this man (love of my life) for 3 years, and I want to suprise him with a new glove. What should I look for? Price isnt really a problem, so any adivce you have would be extremly helpful. I dont want to give him something that he cant use or wont use. And I dont want it to be uncomfortable for him, so if you have knowledge of such things, or have pitched and can tell me what would be best, that would be amazing. There are so many choices that it seems so over whelming to me, to just pick one. I want this gift to mean something. He has such a love for the sport. As do I!!! Thanks so much!

How good/durable are they?