I don't get tipping for things like that, really don't. If I entered into an agreement for services based on a quote, why the hell would I tip after? Unless I realize they gave me a smoking deal compared to the average (maybe just starting out and getting a customer base), then maybe I'll tip in that instance.
But they would realllly have to go out of their way to get a tip out of me. Like painting a part of the house that wasn't originally included, or giving a free upgrade to better paint. Why give a tip when it's just "congrats, you did the job I asked you to do, so here's extra".
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