[2019] 2 Accounts 1 Steam

Using two accounts to gain discounts and moving plat to the main account is an actionable offense, yes. If you are going to have two accounts, make sure that they do not touch each other. My advice to you is to err on the side of caution in all things related to account use. If something happens that levies suspicion about your account activity, you may find yourself facing a ban.

My advice is to play it safe.