(a) The value of an instrument constituting an evidence of debt, such as a check, draft or promissory note, shall be deemed the amount due or collectable thereon or thereby, such figure ordinarily being the face amount of the indebtedness less any portion thereof which has been satisfied.
(b) The value of a ticket or equivalent instrument which evidences a right to receive a transportation, entertainment or other service shall be deemed the price stated thereon, if any; and if no price is stated thereon the value shall be deemed the price of such ticket or equivalent instrument which the issuer charges the general public.
(c) The value of any other instrument which creates, releases, discharges or otherwise affects any valuable legal right, privilege or obligation shall be deemed the greatest amount of economic loss which the owner of the instrument might reasonably suffer by virtue of the loss of the instrument. 3. Where the property consists of gas, steam, water or electricity, which is provided for charge or compensation, the value shall be the value of the property stolen in any consecutive twelve-month period. 4. When the value of property cannot be satisfactorily ascertained pursuant to the standards set forth in subdivisions one and two of this section, its value shall be deemed to be an amount less than two hundred fifty dollars.