Consignment can be great. Your horse is with a (hopefully) respected name that will market your horse well. You won’t have to bother with fielding emails and phone calls, getting ads up, and dealing with the inconveniences that comes with selling a horse (just do a search of all the threads started on how rude potential buyers can be!). I sometimes think consigning a horse is good, too, when it is an emotional sale.
A few things, though…
I highly recommend spending a little cash and getting x-rays BEFORE you start having people look at her (especially if you’ve never done them or it has been a long time). There is absolutely nothing worse, both as the seller and the agent, to get surprised by a bad PPE on what you thought was a sound horse. Avoid the surprises and get them done first, so you know what to expect, how to market and price her, and so you know that if someone passes her up because of a “bad” PPE (And they aren’t willing to share why), you’ll have something to fall back on. It can also be a nice marketing tool to say your horse has recent, CLEAN x-rays (assuming they are clean!). If I ever got back into selling horses (Either my own or as an agent), they would all go on the market with a fresh set of x-rays.
Unless the horse is absolutely not ready to market (seriously out of shape), I would ask your friend to begin marketing her as of June 1 (or, maybe, if she needs a little tune up or conditioning, July 1). There is no reason to wait, and it is harder to sell in the fall.
Make sure the contract spells out EXACTLY what you will be responsible for. She may be covering training and board, but are you going to get hit with a nickle and dime bill every month she has her for mane pulling, whisker trimming, and the like? Are you responsible for show fees? What about paid advertisements? What if the agent wants to buy rights to pro photographs for advertising? Make sure it is VERY clear what you are responsible for and what the trainer expects to cover.
Make sure you are clear on what happens if the horse goes lame or the trainer decides she can’t sell it. Will you be responsible to pay for the time the horse is with her?
If there is a chance the trainer will want to keep the horse, I personally think she needs to pay you what you are expecting to get. I don’t know if that should be covered in a contract, but I do think that’s fair. She shouldn’t get her commission off the sale price if SHE buys it…because she essentially got a trial on the horse.
Good luck and sorry you have to sell. It can be the pits.