As mentioned in the previous thread, I wrote to S&J Hardware and we have a price for a group buy for the LVL3+ or LVL4 ar500 plates. Each sets (10x12) would be 250$+tx. They can ship directly from their warehouse for a flat rate of 19.50$ (except far north) per set or 50$ for 3 sets which is the maximum they can ship per box. We have to order between 10-20 sets to get this price. Guys in the Montreal/South Shore area we can meet up for the delivery of your plates so you can save on shipping.
More info on the plates here: