Commercials that may be tagged as spam

Nowadays, I have been hearing to these radio commercials that maybe thought as spam if I receive emails about them. I am mentioning a couple of them below:

Dentistry
Looking for cheap dentist? I know, who doesn't? Everyone is looking for good deals! You have to cross the border and free transportation is provided.
I was appalled to hear a commercial about Montana Dental Clinic located in Juarez, Mexico on a radio channel in Albuquerque, New Mexico. Apparently, they accept major insurances and major credit cards. Here is a quote from their website.

FREE TRANSPORTATION, from Albuquerque to the clinic & back... Same Day Service... Save up to 70%... Service to Albuquerque, Los Lunas, Belen, Socorro, Las Cruces & El Paso...

Free Laptop Giveaway
An email with that as the subject would be tagged as spam by me and my spam filter. But, today I heard a commercial on a local station (92.9 FM). I verified the website and they seem genuine. Yes, you get a free laptop if you participate in their survey and read the following fine print too!

To receive the incentive gift you must: 1) register with valid information; 2) complete the user survey; 3) complete at least 2 Silver, 2 Gold and 4 Platinum offers; and 4) refer 1 unique household(s) that also complete these requirements. Purchase may be required.