Suckling Airways trading as Scotairways do not own any aircraft therefore cannot sell them. Leasing companies often sell assests to other leasing companies with the aircraft remaining with the current lease holder as part of the deal.
AFAIK all of Scots fleet have been "sold" at some point or other. The Do-328 is fully supported by 328 Support Services who are the current type cert holder. The type (prop) is in high demand and there are few decent examples available for lease or purchase. Scot will probably need more 328's not less from what I hear.