Affordable beginner vape? My boyfriend has been wanting a vaporizer for quite a while, so I wanna get him one for his birthday, but I don't have much experience with vapes so I have no clue what to get. 

Because I'm a bit broke, I'm trying to keep it $100 or less, and looking for something electric and portable or pocket size. He usually smokes 4-5 times a week, and he would be the only one using it for the most part. His big concern is the smell since his roommates don't like it, so something that does a good job of masking the smell would be best.