Does physio really worth it, ~$680.00 for transition lenses, or is it a rip off?

I have -2.25 and +1.5 on both eyes and wearing multifocal lenses. I work with computers all day every day. Lately i have problems while working at the PC and have to take my gles off then I have to sit too close to the screen. My optometrist suggested Physio lenses but they are too expensive. Does someone have an answer please? I see people talk about Rx and pentax lenses what is best for a multifocal pair of gles? thank you