How do you pay on there? Is it safe to use your bank cards?
Ali has Alipay it's own version of paypal. This bypasses the old mega-danger of Ali which used to be handing over your credit card info to individual dealers. I've not heard any reporta that Alipay is any less safe than paypal.
As for Ali overall, I've ordered dozens of items from them. I'd say that one in 8 has arrived damaged or wrong. The good news is that every time I've entered my complaint, been given a refund and told to keep the item.
For wargame-useful items, I've made a few shopping lists that you all might like.
You probably have to be logged into ali to view them, but see if these work for you.
https://my.aliexpress.com/wishlist/wish_list_product_list.htm?spm=a2g0s.8937460.0.0.KF95HC¤tGroupId=3114086036https://my.aliexpress.com/wishlist/wish_list_product_list.htm?spm=a2g0s.8937460.0.0.EEyqMt¤tGroupId=3114063136If they don't work, then there are some search terms that might help. Ali is still in medocre english, so some search terms aren't very effective, but here are some to narrow things down.
"Sand Table" is a catch-all term for diorama, and miniature things. Pair it with a scale or another word to narrow things down.
"Simulation" is another term that is used instead of model. Unfortunatley "building" or "PLastic building" just gets you a ton of lego'ish sets.
"Alloy" instead of "die Cast". Likewise pair it with a scale or another term.
"1/50" Alot of things that are actually O scale, 1/48, or 1/43 get shuffled into this scale.
"1/75" Alot of thigns that are likely closer to HO or 1/72nd end up under this one.
"KiWarm" is a brand for alot of craft stuff and has the best selection of cheap HO and N scale buildings which are sometimes also sold under the "Outland" brand.