I bought FRPP 42lb (Green tops) for a lot less than that (on a Special for $199 + shipping). Why 44's instead of the cheaper 42's? Check out the Stangnet Sponsor's for deals.
Side note: Trick Flow rebuilds old injectors those are not new units. At least thats what they told me when i asked them specifically. I ended up getting a set of Accel units cuz they are new and re-engineered units for the performance market. Called Ford Racing and their injectors are the same thing you buy from the dealer .. no different. At least this is what they told me ... so i went with new Accel units.
Yes, they were the best deal out there when I got mine also. Though, 6 months later, I have a lean condition that I have not been able to solve on the drivers side, I hope and believe the injectors are okay ... but one never knows. What gets me is these companies selling injectors but a lot of them are re-boxed or rebuilt and no different than stock ones. At least Accel uses the less-clogging disc style and are new and tested. Thus, I thought they were the best buy for the money!