Hello from Georgia,
I bought a Versa pak for my son for CHRISTmas and he absolutely loves it. I paid $138 and with tax was right at $150 out the door. This is a good price when compared to a few other dealers around and is a great bargain for a wonderfully simple combo. I personaly would never put another barrel on this gun except for ones made specifically for it. Centerfire Handis are reasonable enough that buying one should not be a huge obstacle and justifying a new barrel or 4 every year is extremely easy when considering that for the price of one new bolt action rifle you can easily get two or three different barrels and in effect get several new guns. Mine will be going back in the next week or so to be fitted wit a .223 and maybe a 25/06, or 30/06, or .35 Whelen, or the new .444, or etc. etc.........................
Go ahead and score one of those Versa paks !! you will not be sorry. My son's shoots the .22 as accurately as you could ask and the .410 shoots both 2 1/2 and 3" shells well enough that I would not hesitate to rely on it as the gun to help my son learn how to flip those pesky little bushytails.
I already have the crockpot ready for some good ol' Squirrels and rice !! Good Luck and God Bless !!
Dave