A shared taxi from the airport, which is 17km from town, costs Birr60 per person. Many hotels have free airport shuttles.
Chartering a bajaj/taxi to see Gonder’s sights costs about Birr80/130 per hour, but you’ll have to negotiate hard for this. Minibuses charge between Birr2 and Birr3 for hops around town. Bajaj, taxis and minibuses congregate just west of the piazza.