From looking at it on Cabelas, it looks pretty decent, and has the TC brand behind it. Light and easily packable into the field.
If you want even more budget, they have rifles from CVA and Traditions that do the same work and some of them even come with starter kits so you can hit the field much faster. You just got to get the powder and primers.
Be sure though, even though these *ahem* modern muzzleloading guns look alot like a .308, the same muzzleloading rules still apply. That means black powder or BP substitutes ONLY.
If you are new to muzzleloading, I would recommend you to browse this forum thoroughly before starting and also check out Youtube videos from muzzleloading experts who do a great job at explaining all the quirks that you may encounter, and how to maintain/clean/upkeep your equipment. Muzzleloading takes a great deal more work and attention so everything runs properly. Cleaning is especially important as black powder and BP substitutes like Pyrodex are quite corrosive and you must clean your guns soon after shooting them to prevent rust.
However, if price is not an issue and you plan on doing other activities in the muzzleloading community like reenactments, competitions, or wood camping, you might want to get a traditional musket or rifle. If you want to go that route, a Civil War rifle, or a Kentucky/Traditions/Pennsylvania longarm is great, some are even budget priced. Check out Dixie Gunworks @
http://dixiegun.com They have a lot of stuff to help get you started.