OP, Few pointers :
1. You want the reviews on one listing or multiple.?
2. If this is for one listing, Getting hundreds of reviews in a day is not going to work. Eventually your listing will be banned.
3. There is no guarantee that all the reviews will stick with 100% ratio. Specially during this pandemic period when all the reviews networks changed their algorithms, this ratio will be around 75% - 80% approx that too when the reviews are posted slowly in organic manner.
4. Even if this project is for multiple listings, rushing things up is not a good choice.
If you are interested to do this in drip fed manner without raising any flags and keeping your listing(s) safe, Check my
BST once. I am open for discussions and can design a campaign for you.
Posting reviews, making the reviews stick, dodging the security algorithm and keeping your business safe
is not that easy as it looks.