Perhaps you could manage/segregate the lists by price... and have buyers commit a certain amount of money (say $750 each for PJs, $1500 for PTs) for their place in line.
Collect the commited money up front once Ernie commits to the number and types of cues for delivery... those who don't pay will get removed from the list. This way all the cues will be paid for once Ernie delivers.
The buyers on the list who take delivery are done. If there happens to be a price discrepancy between the actual price and what the buyers commited, the administrator collects or reimburses the difference.
Those who want to wait will sacrafice their commited payment (until someone buys their cue), but they will not loose their place in line. And to remain in line for the next delivery, they must be prepared and commit to put up another payment when Ernie announces the next batch of cues, else they will be removed from their place in line.
Obviously, if no one buys the rejected cue, the listed buyer will be the owner of the cue and can do with it whatever... sell it, auction it, etc.
In this way, paying is really the key to keeping your place in line... and since the cues must be paid for, the money should be collected before the cues are delivered. This would be similar to, but not exactly the same as, buying an 'option' to own one of the cues in the upcoming batch. However in this case, the 'option buyer' is obligated to take delivery.
Collect the commited money up front once Ernie commits to the number and types of cues for delivery... those who don't pay will get removed from the list. This way all the cues will be paid for once Ernie delivers.
The buyers on the list who take delivery are done. If there happens to be a price discrepancy between the actual price and what the buyers commited, the administrator collects or reimburses the difference.
Those who want to wait will sacrafice their commited payment (until someone buys their cue), but they will not loose their place in line. And to remain in line for the next delivery, they must be prepared and commit to put up another payment when Ernie announces the next batch of cues, else they will be removed from their place in line.
Obviously, if no one buys the rejected cue, the listed buyer will be the owner of the cue and can do with it whatever... sell it, auction it, etc.
In this way, paying is really the key to keeping your place in line... and since the cues must be paid for, the money should be collected before the cues are delivered. This would be similar to, but not exactly the same as, buying an 'option' to own one of the cues in the upcoming batch. However in this case, the 'option buyer' is obligated to take delivery.