What broom did Ginny fly in OotP?
Evidence from the books says that there aren't school issued brooms for Quidditch teams - and that school brooms for general use are not very good - are, in fact, quite bad. When Harry is forced to use one in book 3, it barely gets off the ground. If there were team brooms available, Harry would have had one.
So far as I can see, the only team brooms are for Slytherin, and they were purchased (for whatever reason) by Lucius.
Ron needs his broom; the twins and Harry's brooms have been confiscated and locked up. She's not a prefect (yet - I suspect she's getting a badge along with her school letter) so she's gotten no special present from Mum.
What are her choices?
1. School broom. Old and bad.
2. Borrowed broom (spare from teammate or borrowed from Housemate who is not on the team and doesn't mind it being risked.)
3. Handmedown broom, probably Charlie's. Old but probably in good shape. Get Mum to owl it to her. However, that probably wouldn't happen until she got the position.
4. Team bands together to buy her one.
I'm leaning towards a combination of 2 for the tryouts and 3 for the playing.
Any other ideas?