{
  "identity": "1987 Marshall JCM 800 Lead Series 100 Watt Combo (likely Model 4211 or 4212)",
  "fmv_estimate": "$1,200 - $1,800",
  "original_price": "N/A (Vintage)",
  "verdict": "Good Deal",
  "analysis": "This is an exceptional deal. Marshall JCM 800 amplifiers are highly sought-after vintage gear. While combo versions generally sell for less than the separate heads, a 100-watt JCM 800 combo typically sells for between $1,200 and $1,800 on the used market (e.g., Reverb.com) depending on condition. The listing price of $700 is roughly half of the fair market value. The description notes that it has been serviced with new electrolytic caps and retains the original Celestion speakers, which are positive indicators of value. The missing footswitch is a negligible cost compared to the savings.",
  "alternatives": [
    {
      "name": "Used Marshall DSL40CR Tube Combo",
      "price": "$600 - $750",
      "url": "https://reverb.com/p/marshall-dsl40cr-40w-1x12-tube-guitar-combo-amp"
    },
    {
      "name": "Used Marshall Origin 50C Combo",
      "price": "$450 - $600",
      "url": "https://reverb.com/p/marshall-origin-50c-50w-1x12-tube-guitar-combo-amp"
    }
  ]
}