Realistically low xxx.
I can foresee summermonths dot com on a big poster, billboard or tv commercial - advertising something - maybe a clothing store like 'the gap' advertising their summer line?
Yeah that's it I can see the visions: I can hear the Justin Timberlake song blaring, the skimpy bathing suits on teenagers plastered on 150 clips in a 30 second commercial - then blam:
Check out The Gaps full line of summer clothing at summermonths.com ( It is easy to remember )
Hopefully Justin Timberlake comes out with the perfect song for the video titled 'Summer Months' to align with The Gap's "Summer Months Sale"
Unfortunately if some mega corporation is going to use this name - they likely will have to come up with the name themselves and then decide ok - this .com is our first choice, we can spend up to $30,000 to buy it as we want exactly this domain name..
So then it seems you will need someone on the inside, someone in the marketing department for The Gap or comparable store to come up with their Summer-line advertising campaign, that person will need to blueprint the commercials, the billboards everything - then all they have to do is get their advertising campaign accepted and likely this person will be in charge or have a high influence to design the tv/web marketing campaign to run with - low and behold the perfect name for their campaign rests in your account!
Good luck!