My kids are in a daycare center which I know is much more than in home daycare. I just looked at the pricing for an infant at my daycare in Woodbury and it is $363/week. Please note though that this is a 3:1 ratio and includes diapers and formula.
When looking at daycare or in home care you need to find out what is and isn't included, the ratio of provider to kids, etc. Not all are alike.
The reason we went with a daycare center vs in home daycare is basically a trust issue. I don't know what is going on in an inhome daycare...for example are they watching TV all day, are they being treated poorly or abused? At a daycare center there is always more than 1 adult present and you know they aren't just sitting in front of the TV all day. The children are only with kids their own age too. Our daycare also provides education which is probably more intense once they turn 3 and get in the preschool. My 3 year old son is learning how to write, learning spanish (knows more than I do), music, etc. I think it is worth it.
Look at all your options and see what makes sense for you financially. Good luck.