I am an avid amateur of photography, video creation and have some experience with microphones.
If Ross is into a lapel/lavalier type microphone, then there is really only one good option in the 'prosumer' segment, the RØDE Lavalier. In Europe it can be bought for around €180 http://www.thomann.de/gb/rode_lavalier.htm. However you should add about €25 to the Price since you will need an adapter (the microphone is delivered with a proprietary plug). It does have one downside, its omni-directional (records sound from any direction), but due to its placement, this is not a problem, unless used in noisy surroundings.
A good cheap handheld microphone is the Shure SM58 (I know others have mentioned it). It is an all out classic. Good built quality and uni-directional (cardioid). In Europe it can be bought for around €110 http://www.thomann.de/gb/shure_sm58s.htm. Highly recommended.
Both microphones require phantom power and should be plugged into some type of pre-amplifier with and XLR cable. There are several solutions to this.
I own both microphones and can deliver samples.