Including tax you are up 4$ per watt, It would have to be a hell of a light, I read some bad reviews about their grow lights so I am not sure... I have a feeling you might be better off with a Kessil H350 Magenta if what you want is a pure red big bud booster, you can get them at growershouse.com for 269$ for 90 watts and they have been around for a while...
With that said, I own 2 Kessils now and I can tell you next time I want a bud booster I will buy another full spectrum light, not a Kessil. I would choose my FERO 4G 180 (purchased 1 year ago) over my Kessil any day for supplemental lighting. Area51 has a similar light to what used to be my 4G180 it's called the A51-60, in my opinion you would be much better served with this light (315$) or if you want to spend that kind of cash (500ish$) I would definitely take the A51-120 over the busy bee bud booster!!! You can't even compare... look at the size of each light, hard to believe they are the same price.
to answer your question I do not think it's worth the $$$
EDIT not to mention it might not even be 150watts actual draw, not much infos on their ebay page
