How is budget direct travel insurance different from most other travel insurance?

Price. And claims. Having done claims at many providers, not all providers are as easy as they seem. I will refrain from making more comments. End of the day, you get what you pay for.

The main difference would be that this travel insurance has the convenience of buying anytime you want even if its right before your trip so it is convenient if you have to purchase travel insurance at the last minute. Something else I find attractive would be that the travel insurance covers any trip you make within the period you buy the travel insurance for so there is no limit to the number of places you go to. It could be to any location! Moreover, you cna buy it directly with no extra fees charged so that would be a pretty worth point to buy under budget direct travel.