Figuring Out Buyer Behavior No. 2

Since last Saturday, I have interviewed three interviewees who fit my segment:
A graduate student at UF.
A visiting scholar at UF.
A PhD student at UF.
Each interview took roughly 15 minutes.
The product is an enclosure that can temporarily lock up cellphones while still enabling users using the basic functionality of the phone.
All three of them have agreed that price does play an important role when they're planning on purchasing such a product. They have claimed that quality, especially for durability, would be the critical aspect of this product. Only the visiting scholar interviewee had high expectations on the styling of this product.
As for purchasing, all three of them would like to buy this product online. This result matched my prediction since buyers tend to be constantly on their cellphones. They all agreed that such products don't need financing options.
Although all of them claimed that functionality is the major factor of the post-purchase evaluation process.
Overall, from those interviews, I'm able to better envision the guidelines for the design of the product and marketing strategies I would take after the product is developed.