I think that's a killer deal and I'd be really surprised if you could get another $1500 out of them. If I'm wrong, please let me know.
I bought a left-over 2019 in August and didn't get nearly that good of a deal.
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Current inventory:
F22 & G05
Cadillac CT5-V Blackwing w/3 pedals
Past: E24,E28(3),E34,E36,E37,E38(2),E39(4),E46,E89,E92 (obviously),F01,F06,F10,F30,F87,G12,G30(2),G82(2)