I don't have the new Leader Prime from Power of the Primes yet, but there is a new theme dropping soon called War for Cybertron that's going to feature a Voyager-class Prime that looks pretty nice.
http://news.tfw2005.com/2018/07/13/transformers-generations-war-for-cybertron-figures-revealed-367323It's a bit cheaper than the Leader Prime, so there's that.
And for something that's really up my alley, G1 reissues are supposedly returning to the US exclusively at Wal-Mart. I'd throw up the links, but the Wally website has currently taken them down. The bots available will be Hot Rod, Starscream, Devastator (!), and four minibots: Outback, Swerve, Tailgate, and Bumblebee. Robot Kingdom has them in stock now, and Big Bad Toy Store has Hot Rod in stock:
http://www.bigbadtoystore.com/Product/VariationDetails/75629I would expect them to be much cheaper when (if) they actually hit stores. My guess is they'll be up for sale on Wally's website after Hasbro announces them at SDCC this weekend, but we'll see.