RSA 637:11 Penalties.

I. Theft constitutes a class A felony if:
(a) The value of the property or services exceeds $1,500, or
(b) The property stolen is a firearm, or
(c) The actor is armed with a deadly weapon at the time of the theft, except that if the deadly weapon is a firearm, he shall be sentenced in accordance with RSA 651:2, II-g.
II. Theft constitutes a class B felony if:
(a) The value of the property or services is more than $1,000 but not more than $1,500, or
(b) The actor has been twice before convicted of theft of property or services, as a felony or class A misdemeanor, or
(c) The theft constitutes a violation of RSA 637:5, II(a) or (b), or
(d) The property or services stolen are from 3 separate business establishments within a 72-hour period,