{{ define "current" }}{{ printf "$%.2f" . }}{{ end -}}

{{ define "basicProduct"  -}}
    Name: {{ .Name }}, Category: {{ .Category }}, Price:
        {{- template "current" .Price }}
{{- end -}}

{{ define "expensiveProduct" -}}
    Expensive Product: {{ .Name }}({{ template "current" .Price }})
{{- end -}}


{{ define "mainTemplate" -}}
<h1>There area {{ len . }} products in the source data .</h1>
<h1>First product is {{ index . 0 }}</h1>
{{ range . -}}
{{ if lt .Price 100.00 -}}
    {{ template "basicProduct" . }}
{{ else if gt .Price 1500.00 -}}
    {{ template "expensiveProduct" . }}
{{ else -}}
    <h1>Midrange Product: {{ .Name }}({{ template "current" .Price }})</h1>
{{ end -}}
{{ end }}
{{- end -}}