But it can be pretty expensive to run so it's not for everyone. I would say it's a good approach to indeed look for other types of campaigns if one can't commit. It'd be a better use of budget. Though, I still wouldn't expect a pretty fast paced result. In general, it's more of a slow burn in the forum but can be lucrative once you have established a good presence.
Checking their campaign pay rate, they offer one of the highest. I don't blame them if they want to attract great posters, but marketing is not something you do short-term and you will get instant results. There should be a face, people will notice, then they will recall, until it plays on their mind over and over again when thinking of a platform.
Familiarity is very important in marketing, so duration plays a big factor; one week is just too short to establish a recall. I'm sure they will do another round if they want to be competitive in a highly competitive niche.