Celestron Ultima 18mm Eyepiece (2) $125 with winged eyeguards for binoviewers.
When I use my Panoptic 24mm with a 2.7x barlow on planets and want to step up the magnification to nearly 200 times I prefer using the Ultima 18mm 'cause I can't tell the difference. Once available for $80 each over 15 years ago, today you'd probably need to buy a $125 Televue Plossl to beat it. Please read the user reviews at Excelsis or Cloudy Nights to understand why people often refer to this eyepiece as 'the almost perfect plossl'.
Williams Optics 20mm 66 Degree Eyepiece (2) $50.[SOLD]
These nice eyepieces are provided with the purchase of a Williams Optics binoviewer and since I rarely use them if you want 'em they're yours.
3% PayPal Fee and $6 shipping CONUS for any pair.