I'm going to wait for the Easter clearance and see if I can take my receipt in and get a discount.
That doesn't work on clearanced items. Just hold on to your original "full price" receipt and buy a clearanced one.
That is correct that you can't get any adjustment on clearance and I'd be shocked if any of these SW LEGO sets make it to the day after Easter. I think collector's and parents will snatch these up before then.