I can only answer from the buyers perspective, but I have purchased 1 pin and 3 video games that have been shipped all via STI. I have had all good experiences and the games have arrived in good shape. In all cases these were less common/rare games that I couldn’t find locally. I have driven up to 8 hours each way to get a pin/arcade.
The pin I just got earlier this week, a 1950 Gottlieb Knock Out was 2,0000 miles away. Much too far to drive. I appreciate those that are willing to ship and I certainly understand the concerns with those who don’t or are reluctant. If you are open to the idea, I think it all comes down to a little research regarding the buyer or seller and trusting your gut.