Yes, keep it as there is a nice premium for them at this time; though the values are slowly dropping. A high grade (MS65+) slabbed quarter can earn you some cash even after the grading costs. This said, I pay up to $6 for any I need; nothing more. The price I wish to pay is still hard to find, but it's easier now than last year at this time. I'm not sure if there's a premium on damaged (scratched/dinged/discolored) copies; I won't buy anything less than BU/AU.
When the W coins first came out back in 2019 they were going, retail, for $50 each. At the time, comparing them to the S mint business strikes that had a mintage of around 1,000,000, I said they would eventually drop to around $5 each retail. Apparently per jmkendall, it looks like I'm probably pretty close.