I weld kegs and kettles for fellow homebrewers. It takes a decent amount of time to weld it properly. Anyone can fire up the welder and lay a quick bead and have it done in 15 minutes. You'll have sugaring, and possible cold cracks or leaks... You get what you pay for. But, to do it right and weld a clean or sanitary weld, takes some time. You need to clean and prep, install a device to back purge, preheat the welding surfaces, weld, take everything apart, clean the welds... It takes a bit of time. I charge $50 per weld, for less than 3 welds. The more welds, the more the discount. You have to remember, a good TIG machine costs on average $3,000, a bottle of gas recharge is around $60, don't forget the price of the rod, grinding wheels, torch parts, electricity, etc..... That's a lot of $50 welds and time to pay off that equipment.