Depending on what kind of bird it is and whether I supply the food and cage or if the owner does or if I go to your house and how many times a day will determine how much I charge...
If people bring small birds Green cheeks with their own cages and food I charge $5.00 Large birds are $7.00 under the same conditions...This includes being handled one on one time and out of cage time etc etc.
If I go to the persons house 1 time a day its $15 twice its $25.00
I have one couple where I go to their house twice and they have very specific instructions...they pay me $50.00 a day. They insisted on that amount even though I would have only charged them $25.00 SO it makes me happy....
So you can see that there is a big variation... Make sure you know what they will do for what ever amount you will be paying.
$3.00 seems pretty cheap....but it might not include them being handled etc...
I know of a couple of shops in a bigger city that charge $25.00 you have to pay for 3 days In advance and you have to make reservations 2 weeks in advance and put down a deposit and if you cancel, you only get 1/2 your deposit back...so...
Find out what all it includes and if you want something extra done what it will cost you...