[5] The successful operation of the scheme, and consequently the financial success (perhaps even survival) of the respondent, depended on the continuing capacity of its members to trade with each other within and with others outside the scheme. This, in turn, required that members' trade sales within the scheme be more or less balanced by their trade purchases; for those who maintained, for any sustained period, a substantial positive trade balance would have their liquidity to trade outside the scheme substantially reduced and those who maintained, for any sustained period, a substantial negative trade balance would have their liquidity to trade inside the scheme thereby substantially reduced. There were, consequently, provisions in the agreement aimed at preventing those occurrences: for example that requiring the respondent to use its best endeavours to solicit trade for its members and that requiring members to honour and accept purchases from other members, in the latter case acknowledging that failure to honour such purchases resulted in damage accruing to the respondent.