hi, wondering what the most economical way to go is for buying bulk contemporary usa silver dollars. i got quoted a price of $20/silverdollar at a local jewelry store, quantity 100, immediate inventory. apparently a common unit of purchase is a 100 silver dollar bag. i would request the dollars be placed in plastic containers. very important: the plastic containers must not interact with the copper in the coins to produce a green patina. the reason for storage in rolls is to permit easy placement into flat style safety deposit boxes. should i go with 1, 2, 3, or more...