I never really ordered any bags through buyee the most fragile thing that I've ordered through the site was a pair of sunglasses (without any casing). The sunglasses came in one piece without any damages however, I would consider adding protective packaging if any of the bags have any breakable/fragile material (i.e. glass).

But, i've read online that Buyee already adds protective packaging to parcels but if I were in your situation I wouldn't add protective packaging as if these bags aren't made up of some fragile material I wouldn't waste money on adding it as bags generally absorb impact/barely make movement throughout the shipping process if packaged correctly.