user16981: Is it possible to have a multisignature transaction where N signatures are required and their inputs are limited in value, but not fixed?
The use case would be for a pooled acquisition, where the total amount to be spent is just roughly estimated, but not know. Every participant wants to just specify a maximum value to be used (probably the same for everybody).
The exceeding money, if any can go to a shared account or be returned to each of the "bakers". 

user13163: Restrictions on the btc value of a transaction cannot be enforced via a transaction script. The btc value is not a property accessible from a script.
I think it would be possible though to create a protocol on top of bitcoin which does have such properties.

16981: <p>Is it possible to have a multisignature transaction where N signatures are required and their inputs are limited in value, but not fixed?</p>

<p>The use case would be for a pooled acquisition, where the total amount to be spent is just roughly estimated, but not know. Every participant wants to just specify a maximum value to be used (probably the same for everybody).</p>

<p>The exceeding money, if any can go to a shared account or be returned to each of the "bakers". </p>
 13163: <p>Restrictions on the btc value of a transaction cannot be enforced via a transaction script. The btc value is not a property accessible from a script.</p>

<p>I think it would be possible though to create a protocol on top of bitcoin which does have such properties.</p>
