It’s impossible to appraise vises without a LOT more information and several good pictures as well as where in the world it is. That’s not what this thread is for anyway.
But to give some brief guidance, is the vise in question like the Parker 88 now on eBay with a BIN price of $189 ?
Of course, and normally I try to avoid asking such questions but there's one local to me (Midwest USA) in much better shape than that one on eBay (no cracks/broken parts, way fewer wear marks, has the pipe jaws in excellent shape, etc.) for $125 asking. Figured I might as well at least inquire as to a reasonable ballpark price.
https://scontent-ort2-2.**.fbcdn.net/v/t1.0-9/74909793_2094763987293068_3258188261197086720_n.jpg?_nc_cat=109&_nc_oc=AQnbszTz232WFA9C7_RK664FnmovEwwvm3rDxhCbpJWx65ZHjpYCSDWfk3tmeckCIsM&_nc_ht=scontent-ort2-2.**&oh=6e5cd07573d0dded0715dda7a17aba5a&oe=5E768F63
https://scontent-ort2-2.**.fbcdn.net/v/t1.0-9/75266141_2094764013959732_1257309787087962112_n.jpg?_nc_cat=108&_nc_oc=AQn7LPrCX0YF8pK6CBMwHAPPqvO9ZHB627Was1YheEm6Y56Ir3xSc5bfnl3ruDKYev0&_nc_ht=scontent-ort2-2.**&oh=de8770d450e1e7c1916fc95354ce8915&oe=5E862F7E
https://scontent-ort2-2.**.fbcdn.net/v/t1.0-9/76906695_2094764107293056_8106289302733848576_n.jpg?_nc_cat=100&_nc_oc=AQmvW2l9ta7yQFK__FlIcvnmbmD1D0wK4ARatOO8wqcq8FMkoZpKWI1h-J5dsvFG3f8&_nc_ht=scontent-ort2-2.**&oh=bae13736b48c0dcc8e9ee72a0dc1fe61&oe=5E7FE93E
https://scontent-ort2-2.**.fbcdn.net/v/t1.0-9/72055956_2094764160626384_2657237459342983168_n.jpg?_nc_cat=102&_nc_oc=AQlsYxTQ4vQGl31Nm7W468q3Tw26UpVpLLl5kIGwEv26Na5mZgoOZPiePsiGKZ5fWZk&_nc_ht=scontent-ort2-2.**&oh=e53a10a69aeadb82f26e7fa78032db08&oe=5E6F418B
Looking at it closer (I was looking on my phone before), it appears one of the jaws is welded on...