Braun Oral-B Vitality Sonic Power Rechargeable Toothbrush, Plus 8 Replacement Heads for $29.99 shipped.  Here is screenshot for your reference. It features high frequency side to side action of sonic technology while offering a brush head and brushing technique similar to a manual brush.  For comparisons, this rechargeable toothbrush itself usually goes for about $17, and a 3-pack replacement heads alone usually sells for about $18.