I need 5-6 songs mixed and mastered

Hi there i need 5-6 songs mixed and mastered. I have recorded a few on my own without the original producer who helped me to put together the first 4 songs and so as they are a slightly different songs, id like to get them mixed and mastered together as i want them to sound the " same " if that makes sense. Could you please advise if this would be possible and in terms of pricing what we are looking for. In terms of tracks, each track would not be more then 50 channels. I think the most we got upto would have been about 30, but just in case i am wrong ( lol ) but as far as i know, its not more then 50 for sure.