They likely have a lot of work to do. So that's over an hour of bench time and you want them to warranty the repair. With things under 1K the issue is always is it worth this much to repair. A lot of times it's just cheaper to replace.
I bought a Nikon D3300 camera plus 18-140mm lens (both refurbished) for a total of $600. I got them water damaged and am told repair estimate to be $460. Should I go for repair or hope someone would buy them back on eBay for whatever price they agree on?