I found the prices on dutch side were higher by at least 15%, the service charge.

For example...beers, no service charge. Beers n food at the bar, all has the service charge.

At da waterhole, a burger with no fries was $20 or $25usd. Again, sitting at the bar and incl 15% sc.

Bakery in Maho by Roma was reasonable. I remember sandwiches were quite a bit less than that at airport, but that's my only experience with bakeries lately.

But, this aint no st barths... 150e for lounge chair and 22e for liquid in a glass full of ice on Shell Beach. So they sat us on an air mattress ( thick air mattresses are not bougie to me). Or Antigua where there's a sc and 17.5% tax (total 25%). My bottled water was 23ec.

In my recent travels island hoping, sxm was higher but not by so much.

Enjoy your stay and all that the island has to offer.