It seems to be a small low-budget event. Most of the events that I remember (even online webinars) were expensive as fuck both for visitors, speakers and advertisers. This one is cheap and affordable but the cheap price may correlate with quality in some negative way. So don't expect to find something super special there.
The cheap price is because we want to make it as affordable as possible. Hosting it online helps us cut a lot of costs like renting out a room and paying for our speakers room/travel.
I can attest to the quality of the event not only from the speakers (we have premier Lightning Network dev's speaking like Alex Bosworth, Rusty Russell, and Fabrice Drouin), but also by the bounty prizes. I haven't seen another Lightning hackathon yet that's offered almost 1 BTC's worth of prizes. We hope this will incentivize people to participate and build really cool Lightning apps.