This design is a simplified version of the type of tower that we have lots of in Denmark, on churches, castles etc. I think it is uttermost important that the logo works in black and white before deciding on colour schemes. Situations where the logo is to be shown on either a black or white background can easily arise, and many colourful logos with complex gradients will not necessarily work here.
Sorry for the many submissions, would be easier if they would allow us to upload a sheet with more variations. Anyway I came up with this new addition to the logo, which I think adds to the whole "lower prices" and "increased value" concept. I also rounded the edges slightly.