I have 4 sets here (2 sets of 3600 and 2 sets of 3200). It is first come first serve. The 3600 sets are both G.Skill and used. Also There is Corsair set (used) as well as Kinston set (brand new and sealed). The used ones are in excellent working condition. The unopened one, I presume, will also likely be in fully working order since it is brand new. Discounts are available if purchased along with my Z590 motherboard/ CPU combo (they must be shipped together in order to take advantage of 20% discount). Only 1 set is available for discount for each motherboard/CPU combo set (sorry). Discounts are given in the form of a partial refunds after the product is shipped and the sale is complete. Please ask any questions before buying. Thanks.