Rock/Pop Wall of sound style Christmas Song. String section required.

I'm looking to get an idea of price regarding a String Section,(Quartet) to mix into a Christmas Song that I have written. The tempo is 152bpm which goes up by half a tone, and up to 153bpm for the final choruses and fade. I have general ideas for how the strings should go but I'm not a string player. I can hear in my mind how the accompanying strings should go and I transfer that into the mix as best I can using samples strings. I just wanted to get an idea of the cost of real strings. The strings in the song come in and out but I would also look to get done other ideas down onto the Song which help to really give it a Christmas appeal.. Thanks and regards, Joe

Additional info:
The song has somewhere between 10 and 30 tracks recorded that need mixing.