Going there in November for a few days. I see that there are quite a few options (on quite a few various sites) that range in price from $10 to $100, all for a single entry visa.

I reached out to the VN embassy, and their option is $100....are the cheaper sites less reputable? Any downsides to the cheaper versions?

I have some time still before the trip and would prefer to spend as little as possible, with minimal risk.

Thanks!