This summer I purchased a Bushnell Wireless camera that I'm really liking it. The reason I went with Bushnell is that their cellular plan is month by month. I decided to go with the 1,000 picture per month package that also allows me to change my settings remotely for $12.95 a month. I can also cancel the plan at anytime so no 12 month contracts.
The images are slightly blurry as I didn't pay for the HD texting option, however I can clearly make out what buck it is. I can still go to the camera manually to pull the card to get the HD pictures if I wanted.
I did pay $350-$400 for it which I know is a lot for many people on here, including for me, however I saved up for almost a year and it was worth the wait.