I'm a very active model builder, almost full time (retired) so I buy an average of $750 per month in hobby supplies, kits, electronics and etc.
Scalehobbyist is my go-to for paint, scratchbuilding supplies (styrene), glues, solvents and kits.
Their prices on paint are among the lowest
Their prices on kits are average
Shipping is awesome' usually $9.95 and it comes in a very sturdy box, perfectly inventoried and FAST. They often fill an order in two to three days and have it to me within a week. When they take longer on filling the order they will often expedite it to you so it's about one week.
Returns and refunds; since I've been with them I've only needed two refunds for some paint that had congealed too much. They did not quibble, they simply replaced the paint.
They are my first stop on any project or for hobby shopping.