For me, my favorite RY4 flavor is made by Dekang. I always email and ask vendors who supplies/makes their RY4 before I order to make sure I get the same brand. For example, I just contacted and ordered a 50ml/24mg RYF (Dekang brand) from RMV (Rocky Mountain Vapor) for only $22 with free shipping.
So if it's a particular brand you like, just email/contact the different vendors and they'll let you know who makes it so you can find your best price.
Hope this helps.
