Whoever gifted it you will be due a bottle of something fancy now I bet.
Though not the fastest, any L IS USM is megabucks. You should sell it easy, if you price it right on ebay. Maybe wait for a £1 listing day, or marketplace it.
No seems to be a great time to sell camera stuff on eBay if you can wait for a £1 listing weekend. I’ve shifted a few cameras and lenses on there in the past month and have sold them for more than I bought them for, or in the case of a Canon M6 exactly what I paid for it brand new
Christ... I didn’t realise it was worth so much. I’ll put it in a sales thread.