A couple things to consider: 1) $100 for just the camera? I ask because I have a package for each of my camera's - 2 SD cards ($12), 2 sets (16) Eneloop rechargeable batteries ($40), Python Lock ($20), security box ($35). You can eliminate the rechargeables ($40 each) and figure on spending about $30 on 48 batteries which will power 6 cameras. So, before the camera you're at $107 per camera
You can 'get away' without the security box and the batteries, but you're still at $37 before camera. Anyway, that all aside, I have Primos, Covert, Moultrie, Cuddybak, and Stealthcam. (Had WGI and won't have another). Bang for my buck are the Primos Proof 1 Gen 2 when they are on sale. I got a few of them last year for $30 after a rebate, but you can generally get them around $50 from Dicks or F&S. They are simple to use, take great pictures and have a good trigger speed. The Stealthcams I have are white flash and take nice color night pictures, but they are at or over $100 each, you can't use rechargeables, and the battery life isn't the longest. I liked my Moultrie cams until I had an issue and had to deal with their CS. Not very helpful or accommodating. I've an M80XT working in the woods for about 3 years straight now, and an M880 that crapped out after a year. The Covert was their low end camera and does a decent job. It's along the same lines as the Primos, but isn't in the same league as the Primos as far as image quality, trigger speed, sensor distance, flash, etc. I bought a Cuddyback Long Range IR because of the crazy fast trigger speed and 20 mp. It is (by far) my worst camera. The only one that fogs up every morning, triggers on the slightest weed movement, takes terrible night pictures and just generally a disappointment for $150, or $100, or $50 compared to the Primos. All that being said, I would stay away from Wild Game Innovations, but look at the other known brand names and compare features. Flash distance and trigger speed are important, but so is image quality. Good luck.