Tried a few times, of course it’s cheap so don’t expect very high quality food but I thought it was even better than I expected considering the price. Tested and approved.
Looks cheaper, will try if in area. In Kaoshiung for vegi burgers (and food in general) I like 木葉粗食 Mottainai Plant // link: https://mottainai-veg.com/menu
In a old restored house , not so cheap as the shop above but a fair price to me.
Thanks for the recommendation.
Forgot to add, regarding the burger shop in Tainan, it’s only take away option, 攤位 (hence the cheap price).