My suggestion is that you can also look for sellers on Chinese online sites or offline resellers. I have seen ASICs on AliExpress before and I know that there are many legit online sites in China that you will know which you can use to order for the amount of miners that you want.
This is bad advice, buying Asics from the likes of Aliexpress is very risky, besides, the majority of brand new gears are now in HK not in China, none of those resellers on Aliexpress/Alibaba own a single brand new gear in China, they are either scammers or just brokers who will ship you the gear from HK via another distrutor, so at best, you will be overcharged, at worst, you will be scammed.
If you want to buy in bulk, it is better to contact the manufacturer directly. Like Bitmain. Most ASICs manufacturers are located in China which should make it easy for you to get in touch with any of them.
Bulk for Bitmain and MicroBT is either 4 or 5 digits, anything short of that is not considered bulk and you will have to pay the same prices listed on their website.
I will advice you to avoid scammers that will start to send you PM that they can help you.
Indeed, unsolicited messages that promote some selling are likely to be scam attempts.
Thanks Phil, always great doing business with you.