Is This a Joke?

Remember "download accelerator" from early 2000's which would download files in multiple parallel streams? It's the same. Traditional TCP congestion algorithms are not able to get max speed from intercontinental links.

Modern Linux systems have TCP stacks tuned for high-bandwith/high-latency links, but there are people who still use Windows servers/clients and they want fast transfers too.. why not get some $$$ from them? Or even worse, some huge enterprise orgs which forces everyone to go through ancient proxy.

"Call for price" seems excessive for this, this feels like $20 product to me.. but I guess this works for them? And if there are servers involved and consultants that hand-hold inept IT department on network configuration, then this might actually be worth it.