I am looking into getting blocks and keys for my 01 2500hd and got a quote from a local shop. They said parts(blocks and keys) & labor would be around $325. Is that a alright deal or should i go somewhere else and buy the parts myself. I found keys and add-a-leafs on ebay for $189.....TIA

That is a great deal. The going rate in So. Cal is around 5-600 bucks for this.